Add GitHub workflow

Author: edoardob90

.github/workflows/docker-build.yml

@@ -0,0 +1,36 @@
+name: Build Tutorial Container
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - "*.md"
+      - slides/**
+      - images/**
+      - .gitignore
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build the Docker image
+        run: |
+          docker build -t ghcr.io/${{ github.repository }}:latest .
+
+      - name: Push the Docker image
+        run: |
+          docker push ghcr.io/${{ github.repository }}:latest